Finddem Problem to find the total experience of an employee

problem.js

const _  = require('lodash')

const condidateProfile = {
  experience: [
    {
      company: 'ABC',
      startDate: 2020,
      present: true
    },
    // {
    //   company: 'Microsoft',
    //   startDate: 2018,
    //   endDate: 2020,
    // },
    {
      company: 'Apple',
      startDate: 2015,
      endDate: 2017,
    },
    {
      company: 'Sony',
      startDate: 2012,
      endDate: 2014,
    },
    // {
    //   company: 'Findem',
    //    startDate: 2016,
    //   endDate: 2020,
    // }
  ]
}



const experiencePerCompany = _.compact(_.map(condidateProfile.experience, item => {
  if(item.present) {
    return
  } else {
    return {
      totalYearsWorked: item.endDate - item.startDate
    }
  }
}))

const totalExperience = _.reduce(experiencePerCompany, (acc, val) => acc + val.totalYearsWorked, 0)


//https://zoom.us/j/94889993924?pwd=RUtkZkw0V0NKeGZ3QmIwZmoxa1A0Zz09
//please join above link
console.log({totalExperience})